The U.S. Supreme Court, 5-4, granted states' and industry groups' application for an emergency stay of a district court ruling that had vacated the 2020 Clean Water Act 401 Certification…
A district court dismissed as moot a challenge to EPA's and the Army Corps of Engineers' 2015 Clean Water Rule interpreting the phrase "waters of the United States." Ohio and…
A Minnesota appellate court affirmed in part and reversed in part the Minnesota Pollution Control Agency's (MPCA's) issuance of a permit for a copper-nickel mine in northeastern…
A district court vacated EPA's denial of an environmental group's petition to issue new and revised water quality standards for the state of Washington. The group argued that EPA acted…
The Ninth Circuit remanded EPA's issuance of an NPDES general permit for concentrated animal feeding operations (CAFOs) in Idaho. Environmental groups challenged the permit, arguing it lacked…
A district court denied states' and industry groups' motion to stay an order vacating and remanding EPA's 2020 Clean Water Act Section 401 Certification Rule, which had limited the…
The U.S. Supreme Court dismissed a lawsuit brought by Mississippi against Tennessee seeking damages for a Tennessee city's pumping of groundwater from the Middle Claiborne Aquifer.…
A district court granted in part and denied in part gasoline companies' motion for summary judgment in a lawsuit brought by the state of Maryland seeking to redress alleged contamination of…
A district court vacated and remanded EPA's 2020 Clean Water Act Section 401 Certification Rule, which limited the ability of states and Native American tribes to regulate water pollution.…
The Ninth Circuit remanded a summary judgment order in a challenge to EPA's approval of Montana's variance request from approved water quality standards adopted under the CWA. An…